I'm sorry I missed this thread last night as I was working with our dear friend Laurie on sexing the baby quads....
What I'm about to say is for my quads ONLY, and not my panthers.
I run a room humidifier 24 hours a day (due to the AC being on at all hours), I also run a humidifier that directly showers the cages with mist twice a day for 1 hour.
This humidifier also runs twice at NIGHT for 60 seconds to keep the humidity above 70.
On most nights this is all I need to provide a healthy environment for my quads.
There have been some nights that the humidity has been quite bad and I have misted at night.
If done it is just a light 1 min misting to help keep the humidity above 70%.
Regardless of what some people think, there is nothing wrong with what I'm doing.
Of course I mist at least 3 times a day, but if needed I have no problem with misting at night.
It always depends on what is going on with the weather outside, and I will do what it takes to keep my babies healthy.
As for the fear of cages not drying out...if they weren't drying out, there would be no reason to mist at night.
As for your veiled, as long as the RH doesn't drop below 40% you can skip the hand spraying at night before you goto bed.
Harry